This reminds me of certain Christians' lament to "keep the Christ in Christmas".

Although Christians, in general, are the majority in the US, the Christians who are actually religious enough to care about "keeping Christ in Christmas" are naturally dismayed at the broader society's appropriation of what to them should be a sacred occasion, rather than just a fun occasion.

But of course, different people believe different things, and so it seems ultimately backwards to police the reasons why someone enjoys participating the Christmas traditions.

This also reminds me of how some Christians think gay marriage is somehow damaging to heterosexual marriage. But the common liberal response, which I think is the correct response, is basically that that is nonsense.

If you participate in a tradition, and you see that tradition as carrying some sacred meaning then that is fine. But other people may not believe the same things as you, and may therefore participate in similar traditions without the same intention. But that doesn't actually affect you. And it seems silly to say that it does, and silly to try to police it.